BMW to replace faulty timing chain in 2008-2014 vehicles

BMW issues a service bulletin for models powered by the N63 4.4 liter V8 engine. BMW says “the timing chains on the the N63 have …

BMW issues a service bulletin for models powered by the N63 4.4 liter V8 engine. BMW says “the timing chains on the the N63 have been found to been found to stretch and wear out prematurely, resulting in premature valvetrain wear and reduced engine performance.”

In order to identify the issue, a trip to the dealership is needed. BMW techs will perform a test procedure to determine the if the issues occurs with that particular engine. If needed, the dealers will replace the chains, along with all accompanying hardware.

You can call BMW directly at 800-831-1117, the NHTSA at 888-327-4236 or the local dealership to determine if your car is eligible for repairs.

Full details below:

The problem: Timing chains on N63 engines have been found to stretch and wear out prematurely, resulting in premature valvetrain wear and reduced engine performance.

Corrective action: BMW has come up with a test procedure to determine timing chain wear. Dealers will perform this test in conjunction with the N63 Customer Care Package, which is designed to ensure proper long-term engine operation. After this test has been performed, dealers will replace the chain as necessary, along with all accompanying hardware, including the chain tensioner and hardware as well as the chain sprocket. The oil and oil filter will be changed, and techs will reprogram the vehicle’s onboard computer to alert drivers of shorter oil-change intervals.

Warranty info: This repair is covered under the new car limited warranty or, if applicable, the certified pre-owned warranty. If an extended warranty is in place and the factory warranty has expired, the repair might be covered under that warranty.

What owners should do: Call your local dealer with your vehicle’s identification number to determine if it’s eligible for repairs under this service bulletin. You can call BMW directly at 800-831-1117 or NHTSA at 888-327-4236. Reference TSB No. 111614.